TDA7318D STMicroelectronics, TDA7318D Datasheet

IC PROCESSOR STEREO DGTL 28-SOIC

TDA7318D

Manufacturer Part Number
TDA7318D
Description
IC PROCESSOR STEREO DGTL 28-SOIC
Manufacturer
STMicroelectronics
Type
Audio Processorr
Datasheet

Specifications of TDA7318D

Applications
Hi-Fi Systems
Mounting Type
Surface Mount
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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November 1999
DESCRIPTION
The TDA7318 is a volume, tone (bass and treble)
balance (Left/Right) and fader (front/rear) processor
for quality audio applications in car radio and Hi-Fi
systems.
PIN CONNECTION (Top view)
INPUT MULTIPLEXER:
- 4 STEREO INPUTS
- SELECTABLE INPUT GAIN FOR OPTIMAL
INPUT
EQUALIZER OR NOISE REDUCTION SYS-
TEM
VOLUME CONTROL IN 1.25dB STEPS
TREBLE AND BASS CONTROL
FOUR SPEAKER ATTENUATORS:
- 4 INDEPENDENT SPEAKERS CONTROL
- INDEPENDENT MUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL I
FADER FACILITIES
IN 1.25dB STEPS FOR BALANCE AND
ADAPTION TO DIFFERENT SOURCES
2
C BUS
DIGITAL CONTROLLED STEREO AUDIO PROCESSOR
®
AND OUTPUT
FOR EXTERNAL
Selectable input gain is provided. Control is accom-
plished by serial I
The AC signal setting is obtained by resistor networks
and switches combined with operational amplifiers.
Thanks to the used BIPOLAR/CMOS Tecnology,
Low Distortion, Low Noise and Low DC stepping are
obtained.
TDA7318
ORDERING NUMBERS:
DIP28
2
C bus microprocessor interface.
TDA7318
TDA7318D
SO28
1/14

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TDA7318D Summary of contents

Page 1

... Selectable input gain is provided. Control is accom- plished by serial I The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers. Thanks to the used BIPOLAR/CMOS Tecnology, Low Distortion, Low Noise and Low DC stepping are obtained. TDA7318 DIP28 SO28 ORDERING NUMBERS: TDA7318 TDA7318D 2 C bus microprocessor interface. 1/14 ...

Page 2

TDA7318 TEST CIRCUIT THERMAL DATA Symbol R Thermal Resistance Junction-pins th j-pins ABSOLUTE MAXIMUM RATINGS Symbol V Operating Supply Voltage S T Operating Ambient Temperature amb T Storage Temperature Range stg QUICK REFERENCE DATA Symbol V Supply Voltage S V ...

Page 3

BLOCK DIAGRAM TDA7318 3/14 ...

Page 4

TDA7318 ELECTRICAL CHARACTERISTICS (refer to the test circuit 600 , all controls flat ( 1KHz unless otherwise specified) G Symbol Parameter SUPPLY V Supply Voltage S I Supply Current S SVR Ripple Rejection ...

Page 5

ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter AUDIO OUTPUTS V Clipping Level OCL R Output Load Resistance L C Output Load Capacitance L R Output resistance OUT V DC Voltage Level OUT GENERAL e Output Noise NO S/N Signal to Noise Ratio ...

Page 6

TDA7318 Figure 3: Distortion & Noise vs. Frequency Figure 5: Distortion vs. Load Resistance Figure 7: Input Separation (L1 Frequency 6/14 Figure 4: Distortion & Noise vs. Frequency Figure 6: Channel Separation (L L2, L3, L4) vs. Figure 8: Supply ...

Page 7

Figure 9: Output Clipping Level vs. Supply Voltage Figure 11: Supply Current vs. Temperature Figure 13: Typical Tone Response (with the ext. components indicated in the test circuit) Figure 10: Quiescent Current vs. Supply Voltage Figure 12: Bass Resistance vs. ...

Page 8

TDA7318 BUS INTERFACE Data transmission from microprocessor to the TDA7318 and viceversa takes place thru the 2 2 wires I C BUS interface, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage ...

Page 9

SOFTWARE SPECIFICATION Interface Protocol The interface protocol comprises: A start condition (s) A chip address byte, containing the TDA7318 TDA7318 ADDRESS MSB first byte ACK = Acknowledge S = Start P = ...

Page 10

TDA7318 SOFTWARE SPECIFICATION (continued) DATA BYTES (detailed description) Volume MSB For example a volume of -45dB is given by ...

Page 11

Audio Switch MSB For example to select the stereo 2 input with a gain of +12.5dB the 8bit string is Bass and Treble ...

Page 12

TDA7318 mm DIM. MIN. TYP. MAX. A 2.65 a1 0.1 0.3 0.004 b 0.35 0.49 0.014 b1 0.23 0.32 0.009 C 0 (typ.) D 17.7 18.1 0.697 E 10 10.65 0.394 e 1.27 e3 16.51 F 7.4 7.6 ...

Page 13

DIM. MIN. TYP. MAX. MIN. a1 0.63 b 0.45 b1 0.23 0.31 0.009 b2 1.27 D 37.34 E 15.2 16.68 0.598 e 2.54 e3 33.02 F 14.1 I 4.445 L 3.3 inch MECHANICAL DATA TYP. MAX. 0.025 0.018 0.012 ...

Page 14

... This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © 1999 STMicroelectronics – Printed in Italy – All Rights Reserved ...

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